“This morning, there are more than one billion people using Facebook actively each month.

If you’re reading this: thank you for giving me and my little team the honor of serving you.

Helping a billion people connect is amazing, humbling and by far the thing I am most proud of in my life.

I am committed to working every day to make Facebook better for you, and hopefully together one day we will be able to connect the rest of the world too.”

According to a fact sheet that accompanied the post, the social networking giant reached one billion users on September 14th. The median age of Facebook users is 22, and the network now has 600 million mobile users. The top five countries where people are using Facebook include (in alpha order): Brazil, India, Indonesia, Mexico and the United States.

On Monday, Foursquare co-founder and CEO Dennis Crowley also had big news: the geo-location platform now boasts 25 million users, 5 million check-ins a day and 1 million registered merchants, reported SmartBlog on Social Media. Crowley said that many users are drawn to the service as a way to save money through discounts and coupons. He declared Foursquare “open for business” and ready to work with companies to create partnerships and drive revenue.

About the Author

Marissa McNaughton

Marissa was tricked into working for Modern Media by a Facebook message promising her an iPad. She facilitates all things community for Modern Media and is an editor for The Realtime Report.

When not at work, Marissa can be found surfing, outdoors, or teaching yoga throughout the East End. Previously, she worked in event planning and philanthropy for The Nature Conservancy, and as General Manager of the Hamptons Shakespeare Festival, a grassroots non-profit theater in Montauk.

Marissa grew up on Long Island and now lives in Montauk, NY. She graduated with a BA in English & History from Yale University.